How many chill hours does 92401 get?

92401 averages 534 chill hours per winter, ranging from 268 to 884 across the last 10 years.

What hardiness zone is 92401?

92401 is in USDA hardiness zone 10a.

Location almanac

The short answer

92401 averages 534 chill hours per winter (268–884 across 10 years) in USDA zone 10a.

92401 climate
Average chill hours	534 (268–884 across 10 winters)
USDA hardiness zone	10a
Last spring frost	typically February 3 – February 23

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 92401’s chill hours and zone:

Chill and zone requirements are comfortably met in 92401.

Show 22 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 92401 get?: 92401 averages 534 chill hours per winter, ranging from 268 to 884 across the last 10 years.
What hardiness zone is 92401?: 92401 is in USDA hardiness zone 10a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026